This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 11 |
| 2 | 101 |
| 3 | 1013 |
| 4 | 10141 |
| 5 | 100153 |
| 6 | 1000193 |
| 7 | 10000763 |
| 8 | 100000673 |
| 9 | 1000000933 |
| 10 | 10000002713 |
| 11 | 100000005041 |
| 12 | 1000000010489 |
| 13 | 10000000003243 |